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flaport · Aug 12, 2024 · 3f93634 · 3f93634
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diff --git a/_downloads/efb3b4666098beb850423676c57575d3/sax-utils-1.pdf b/_downloads/efb3b4666098beb850423676c57575d3/sax-utils-1.pdf
diff --git a/_modules/sax/circuit.html b/_modules/sax/circuit.html
@@ -399,6 +399,7 @@ <h1>Source code for sax.circuit</h1><div class="highlight"><pre>
     <span class="n">recnet</span><span class="p">:</span> <span class="n">RecursiveNetlist</span> <span class="o">=</span> <span class="n">parse_netlist</span><span class="p">(</span>
         <span class="n">netlist</span><span class="p">,</span> <span class="n">with_unconnected_instances</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">with_placements</span><span class="o">=</span><span class="kc">False</span>
     <span class="p">)</span>
+    <span class="n">_validate_netlist_ports</span><span class="p">(</span><span class="n">recnet</span><span class="p">)</span>
     <span class="n">dependency_dag</span><span class="p">:</span> <span class="n">nx</span><span class="o">.</span><span class="n">DiGraph</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="n">_create_dag</span><span class="p">(</span><span class="n">recnet</span><span class="p">,</span> <span class="n">models</span><span class="p">,</span> <span class="n">validate</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
     <span class="n">models</span> <span class="o">=</span> <span class="n">_validate_models</span><span class="p">(</span><span class="n">models</span><span class="p">,</span> <span class="n">dependency_dag</span><span class="p">,</span> <span class="n">extra_models</span><span class="o">=</span><span class="n">instance_models</span><span class="p">)</span>
 
@@ -746,6 +747,20 @@ <h1>Source code for sax.circuit</h1><div class="highlight"><pre>
     <span class="k">if</span> <span class="ow">not</span> <span class="n">dag</span><span class="o">.</span><span class="n">is_directed</span><span class="p">():</span>
         <span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">&quot;Netlist dependency cycles detected!&quot;</span><span class="p">)</span>
     <span class="k">return</span> <span class="n">dag</span>
+
+
+<span class="k">def</span> <span class="nf">_validate_netlist_ports</span><span class="p">(</span><span class="n">netlist</span><span class="p">:</span> <span class="n">RecursiveNetlist</span><span class="p">):</span>
+    <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">netlist</span><span class="o">.</span><span class="n">root</span><span class="p">)</span> <span class="o">&lt;</span> <span class="mi">1</span><span class="p">:</span>
+        <span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="s2">&quot;Cannot create circuit: empty netlist&quot;</span><span class="p">)</span>
+    <span class="n">net</span><span class="p">:</span> <span class="n">Netlist</span> <span class="o">=</span> <span class="n">netlist</span><span class="o">.</span><span class="n">root</span><span class="p">[</span><span class="nb">list</span><span class="p">(</span><span class="n">netlist</span><span class="o">.</span><span class="n">root</span><span class="p">)[</span><span class="mi">0</span><span class="p">]]</span>
+    <span class="n">ports_str</span> <span class="o">=</span> <span class="s2">&quot;, &quot;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="nb">list</span><span class="p">(</span><span class="n">net</span><span class="o">.</span><span class="n">ports</span><span class="p">))</span>
+    <span class="k">if</span> <span class="ow">not</span> <span class="n">ports_str</span><span class="p">:</span>
+        <span class="n">ports_str</span> <span class="o">=</span> <span class="s2">&quot;no ports given&quot;</span>
+    <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">net</span><span class="o">.</span><span class="n">ports</span><span class="p">)</span> <span class="o">&lt;</span> <span class="mi">2</span><span class="p">:</span>
+        <span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span>
+            <span class="s2">&quot;Cannot create circuit: &quot;</span>
+            <span class="sa">f</span><span class="s2">&quot;at least 2 ports need to be defined. Got </span><span class="si">{</span><span class="n">ports_str</span><span class="si">}</span><span class="s2">.&quot;</span>
+        <span class="p">)</span>
 </pre></div>
 
                 </article>